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EN 1.4971 Stainless Steel vs. EN 1.4845 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4845 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 74% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is EN 1.4845 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
170
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
38
Fatigue Strength, MPa 270
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
78
Shear Strength, MPa 530
410
Tensile Strength: Ultimate (UTS), MPa 800
600
Tensile Strength: Yield (Proof), MPa 340
240

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
450
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1460
1400
Melting Onset (Solidus), °C 1410
1360
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
25
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
4.3
Embodied Energy, MJ/kg 110
61
Embodied Water, L/kg 300
190

Common Calculations

PREN (Pitting Resistance) 38
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
180
Resilience: Unit (Modulus of Resilience), kJ/m3 280
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.1
Chromium (Cr), % 20 to 22.5
24 to 26
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
48.2 to 57
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
19 to 22
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0